Computer Simulation of an Additive Reaction Process in Dual-Phase Microstructures

For fuel savings as well as energy and resource requirement, high strength low alloy steels (HSLA) are of particular interest to automobile industry because of the potential weight reduction which can be achieved by using thinner section of these steels to carry the same load and thus to improve the fuel mileage. Dual phase treatment has been utilized to obtain superior strength and ductility combinations compared to the HSLA of identical composition. Recently, cooling rate following heat treatment was found to be important to the tensile properties of the dual phase steels. In this paper, we report the results of the investigation of cooling rate on the microstructures and mechanical properties of several vanadium HSLA steels.The steels with composition (in weight percent) listed below were supplied by China Steel Corporation: 1. low V steel (0.11C, 0.65Si, 1.63Mn, 0.015P, 0.008S, 0.084Aℓ, 0.004V), 2. 0.059V steel (0.13C, 0.62S1, 1.59Mn, 0.012P, 0.008S, 0.065Aℓ, 0.059V), 3. 0.10V steel (0.11C, 0.58Si, 1.58Mn, 0.017P, 0.008S, 0.068Aℓ, 0.10V).

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Characterization of Modulated Structure Through Structure Images and their Computer Simulation

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100179105 ◽

1990 ◽

Vol 48 (1) ◽

pp. 70-71

Author(s):

Kiyomichi Nakai ◽

Yusuke Isobe ◽

Chiken Kinoshita ◽

Kazutoshi Shinohara

Keyword(s):

Computer Simulation ◽

High Resolution ◽

Spherical Aberration ◽

High Resolution Electron Microscopy ◽

Basic Mechanism ◽

Objective Lens ◽

Specimen Thickness ◽

Transmitted Beam ◽

Modulated Structure ◽

Resolution Electron

Induced spinodal decomposition under electron irradiation in a Ni-Au alloy has been investigated with respect to its basic mechanism and confirmed to be caused by the relaxation of coherent strain associated with modulated structure. Modulation of white-dots on structure images of modulated structure due to high-resolution electron microscopy is reduced with irradiation. In this paper the atom arrangement of the modulated structure is confirmed with computer simulation on the structure images, and the relaxation of the coherent strain is concluded to be due to the reduction of phase-modulation.Structure images of three-dimensional modulated structure along <100> were taken with the JEM-4000EX high-resolution electron microscope at the HVEM Laboratory, Kyushu University. The transmitted beam and four 200 reflections with their satellites from the modulated structure in an fee Ni-30.0at%Au alloy under illumination of 400keV electrons were used for the structure images under a condition of the spherical aberration constant of the objective lens, Cs = 1mm, the divergence of the beam, α = 3 × 10-4 rad, underfocus, Δf ≃ -50nm and specimen thickness, t ≃ 15nm. The CIHRTEM code was used for the simulation of the structure image.

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Continuous-progress education. II. Computer simulation model of a flexible dental curriculum

Journal of Dental Education ◽

10.1002/j.0022-0337.1972.36.12.tb00621.x ◽

1972 ◽

Vol 36 (12) ◽

pp. 27-32

Author(s):

NS Logan ◽

RM Jacobs

Keyword(s):

Computer Simulation ◽

Simulation Model ◽

Computer Simulation Model ◽

Dental Curriculum ◽

Continuous Progress

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Computer simulation of a dental practice using therapists

Journal of Dental Education ◽

10.1002/j.0022-0337.1972.36.6.tb00547.x ◽

1972 ◽

Vol 36 (6) ◽

pp. 35-39

Author(s):

JB Dilworth ◽

WJ Pelton

Keyword(s):

Computer Simulation ◽

Dental Practice

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Averting robo-bees: why free-flying robotic bees are a bad idea

Emerging Topics in Life Sciences ◽

10.1042/etls20190063 ◽

2019 ◽

Vol 3 (6) ◽

pp. 723-729

Author(s):

Roslyn Gleadow ◽

Jim Hanan ◽

Alan Dorin

Keyword(s):

Climate Change ◽

Computer Simulation ◽

Food Security ◽

European Countries ◽

Plant Interactions ◽

Plant Insect Interactions ◽

Native Habitat ◽

Insect Pollinators ◽

Insect Interactions

Food security and the sustainability of native ecosystems depends on plant-insect interactions in countless ways. Recently reported rapid and immense declines in insect numbers due to climate change, the use of pesticides and herbicides, the introduction of agricultural monocultures, and the destruction of insect native habitat, are all potential contributors to this grave situation. Some researchers are working towards a future where natural insect pollinators might be replaced with free-flying robotic bees, an ecologically problematic proposal. We argue instead that creating environments that are friendly to bees and exploring the use of other species for pollination and bio-control, particularly in non-European countries, are more ecologically sound approaches. The computer simulation of insect-plant interactions is a far more measured application of technology that may assist in managing, or averting, ‘Insect Armageddon' from both practical and ethical viewpoints.

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